Impregnating agent for materials containing cellulose
AssigneeDynamit Nobel Aktiengesellschaft
InventorsBruno Luthringshauser, Claus Lindzus
Life of this patent
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Abstract
An impregnating agent for a cellulose-containing material, comprising (a) An alkyltrialkoxysilane of the formula R Si (OR').sub.3 in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms, and (b) Chelate of alcoholate of tin or of a metal of the third main group or fourth or fifth secondary group of the periodic system of the elements, and/or optionally (c) Silicic acid ester, and a method for water-proofing cellulosic materials by contacting the same with such impregnating agent.
Claims25
An impregnating agent for a cellulose article comprising
- (a) An alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' and alkyl moiety of 1 to 4 carbon atoms, and
- (b) A chelate of a metal of the third main group or fourth or fifth secondary group of the periodic system of the elements, wherein component (a) is present in the mixture in an amount between 5 and 99.5% by-weight and component (b) is present in said mixture in an amount between 0.5 and 95 wt.-%, said alkyltrialkoxysilane and said chelate being present in amounts effective to produce an impregnating agent which has a waterproofing action on cellulose.
An impregnating agent for a cellulose article comprising:
- (a) an alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms, and (b) a chelate or alcholoate of a metal of the third main group of the periodic system of the elements, wherein component (a) is present in the mixture in an amount between 5 and 99.5 wt.-% and component (b) is present in an amount between 0.5 and 95 wt.-%, the combined amounts of components (a) and (b) being present in an amount effective to produce an impregnating agent which has a water-proofing action on cellulose.
An impregnating agent for a cellulose article comprising:
- (a) An alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms, and
- (b) a metallic acid ester of the formula
- Me.sup.III (OR).sub.3
- wherein
- Me.sup.III represents a metal of the third main group of the periodic table and R represents an alkyl moiety of 1 to 8 carbon atoms or an oligomer thereof with up to 10 Me--O--Me units,
- wherein component (a) is present in the mixture in an amount between 5 and 99.5 wt.-% and component (b) is present in an amount between 0.5 and 95 wt.-%, the combined amounts of components (a) and (b) being present in an amount effective to produce an impregnating agent which has a water-proofing action on cellulose.
An impregnating agent for a cellulose article comprising:
- (a) an alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms, and
- (b) a chelate or alcoholate of a metal of the third man group of the periodic system of the elements, a metallic acid ester of the formula
- Me.sup.IV O(OR).sub.2
- wherein
- ME.sup.IV is, titanium, zirconium or hafnium, and
- R is C.sub.1-8 alkyl or an oligomer thereof with up to 10 Me--O--Me units,
- wherein component (a) is present in the mixture in an amount between 5 and 99.5 wt.-% and component (b) is present in an amount between 0.5 and 95 wt.-%, the combined amounts of components (a) and (b) being present in an amount effective to produce an impregnating agent which has a water-proofing action on cellulose.
An impregnating agent for a cellulose article comprising:
- (a) an alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms, and
- (b) a chelate of tin with acetylacetonate,
- wherein component (a) is present in the mixture in an amount between 5 and 99.5 wt.-% and component (b) is present in an amount between 0.5 and 95 wt.-%, the combined amounts of components (a) and (b) being present in an amount effective to produce an impregnating agent which has a water-proofing action on cellulose.
A method of rendering a cellulose article water-repellent which comprises contacting said cellulose-containing composition with an impregnating agent comprising:
- (a) an alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon atoms;
- and
- (b) a chelate or alcoholate of tin or metal of the third main group or fourth or fifth secondary group of the periodic system of the elements,
- wherein component (a) is present in the mixture in an amount between 5 and 99.5 wt.-% and component (b) is present in an amount between 0.5 and 95 wt.-% the combined amounts of components (a) and (b) being present in an amount effective to produce an impregnating agent which has a water-proofing action on cellulose.
A method of rendering paper water repellent which comprises contacting said paper with an impregnating agent comprising:
- (a) an alkyltrialkoxysilane of the formula R Si(OR').sub.3, in which R represents an alkyl moiety of 1 to 18 carbon atoms and R' an alkyl moiety of 1 to 4 carbon items;
- and (b) a silicic acid ester of the formula Si(OR').sub.4 '
- wherein R is an alkyl moiety of 1 to 8 carbon atoms or an oligomer thereof with up to 10 Si--O--Si units, said impregnating agent containing 60 to 98% by-weight of said alkyltrialkoxysilane and 2 to 40% by-weight of said silicic acid ester, said alkyltrialkoxysilane and said silicic acid ester being present in an amount effective to produce an impregnating agent which has a water proofing action on paper.
Dependencies are inferred from the claim text.